Isithombe sesibhengezo: Isibani se-ultraviolet esivela kusibani se-krypton chloride excimer sinikwa amandla ama-molecule ahamba phakathi kwezimo zamandla ezihlukene. (Umthombo: Linden Research Group)
Ucwaningo olusha oluvela eNyuvesi yaseColorado Boulder luthole ukuthi amaza athile okukhanya kwe-ultraviolet (UV) awasebenzi nje kuphela ngokubulala igciwane elibangela i-COVID-19, kodwa futhi aphephe kakhudlwana ukuwasebenzisa ezindaweni zomphakathi.
Lolu cwaningo, olushicilelwe kule nyanga ephephabhukwini i-Applied and Environmental Microbiology, luwukuhlaziywa kokuqala okuphelele kwemiphumela yamaza ahlukene okukhanya kwe-ultraviolet ku-SARS-CoV-2 namanye amagciwane okuphefumula, okuhlanganisa nelo lodwa eliphephe kakhudlwana ezintweni eziphilayo futhi. ayidingi ukuxhumana kwamaza. Vikela.
Ababhali babiza lokhu okutholakele ngokuthi “ukushintsha umdlalo” wokusetshenziswa kokukhanya kwe-UV okungaholela ezinhlelweni ezintsha ezithengekayo, eziphephile nezisebenzayo zokunciphisa ukusabalala kwamagciwane ezindaweni eziminyene zomphakathi njengezikhumulo zezindiza nezindawo zamakhonsathi.
“Cishe kuwo wonke amagciwane esiwafundile, leli gciwane lingelinye lamagciwane alula ukuwabulala ngokukhanya oku-ultraviolet,” kusho umlobi omkhulu uCarl Linden, uprofesa wobunjiniyela bezemvelo. “Idinga imithamo ephansi kakhulu. Lokhu kukhombisa ukuthi ubuchwepheshe be-UV bungaba yisixazululo esihle kakhulu sokuvikela izindawo zomphakathi. ”
Imisebe ye-Ultraviolet ikhishwa yilanga ngokwemvelo, futhi izinhlobo eziningi ziyingozi ezintweni eziphilayo kanye namagciwane anjengamagciwane. Lokhu kukhanya kungamuncwa i-genome yento ephilayo, kubophe amafindo kukho futhi kuvimbele ukuthi zingazalani. Nokho, lawa maza amaza ayingozi avela eLangeni ahlungwa ungqimba lwe-ozone ngaphambi kokuba afinyelele emhlabeni.
Eminye imikhiqizo evamile, njengamalambu e-fluorescent, isebenzisa imisebe ye-UV ye-ergonomic, kodwa ibe noqweqwe lwangaphakathi lwe-phosphorus emhlophe oluyivikela emisebeni ye-UV.
"Lapho sisusa i-coating, singakhipha ama-wavelength angaba yingozi esikhumbeni nasemehlweni ethu, kodwa futhi angabulala amagciwane," kusho uLinden.
Izibhedlela sezivele zisebenzisa ubuchwepheshe be-UV ukukhipha amagciwane ezindaweni ezingahlali muntu futhi zisebenzisa amarobhothi ukusebenzisa ukukhanya kwe-UV phakathi kwamagumbi okuhlinza namagumbi eziguli.
Amagajethi amaningi emakethe namuhla angasebenzisa ukukhanya kwe-UV ukuhlanza yonke into kusukela komakhalekhukhwini kuya emabhodleleni amanzi. Kodwa i-FDA kanye ne-EPA basathuthukisa imigomo yokuphepha. U-Linden uxwayisa ngokusebenzisa noma iyiphi into yomuntu siqu noma “yokufaka inzalo” echaya abantu ekukhanyeni kwe-ultraviolet.
Uthe okutholakele okusha kuhlukile ngoba kumelela indawo ephakathi phakathi kokukhanya kwe-ultraviolet, okuphephe kakhulu kubantu futhi kuyingozi kumagciwane, ikakhulukazi igciwane elidala i-COVID-19.
Kulolu cwaningo, uLinden nethimba lakhe baqhathanise ubude beza obuhlukene bokukhanya kwe-UV besebenzisa izindlela ezijwayelekile ezakhiwe kuyo yonke imboni ye-UV.
"Sicabanga ukuthi asihlangane senze izitatimende ezicacile mayelana nenani lokuchayeka kwe-UV edingekayo ukuze kubulawe i-SARS-CoV-2," kusho uLinden. "Sifuna ukwenza isiqiniseko sokuthi uma usebenzisa ukukhanya kwe-UV ukulwa nalesi sifo, uzophumelela". Umthamo wokuvikela impilo yabantu nesikhumba somuntu futhi ubulale lawa magciwane. ”
Amathuba okwenza lo msebenzi ayivelakancane njengoba ukusebenza ne-SARS-CoV-2 kudinga amazinga okuphepha aqinile kakhulu. Ngakho-ke uLinden noBen Ma, osebenza naye ngemuva kodokotela eqenjini likaLinden, bahlangana nodokotela wegciwane uCharles Gerba wase-University of Arizona elabhorethri enikezwe ilayisense yokutadisha leli gciwane kanye nezinhlobonhlobo zalo.
Abacwaningi bathola ukuthi nakuba amagciwane ngokuvamile ezwela kakhulu ekukhanyeni kwe-ultraviolet, ubude begagasi be-ultraviolet obuthile (222 nanometers) busebenza kahle kakhulu. Le wavelength idalwe amalambu e-krypton chloride excimer, anikwa amandla ama-molecule ahamba phakathi kwezifunda zamandla ahlukene futhi angamandla aphezulu kakhulu. Kanjalo, iyakwazi ukudala umonakalo omkhulu kumaprotheni egciwane kanye nama-nucleic acid kunamanye amadivaysi e-UV-C futhi ivinjwe izingqimba zangaphandle zesikhumba namehlo womuntu, okusho ukuthi ayinayo imiphumela eyingozi yezempilo. ibulala igciwane.
Imisebe ye-UV enobude obuhlukahlukene (ekalwa lapha ngama-nanometers) ingangena ezingxenyeni ezihlukene zesikhumba. Lapho lawa maza amaza ejula esikhunjeni, abangela umonakalo omkhulu. (Umthombo wesithombe: “I-UV Ekude: Isimo Samanje Solwazi” eshicilelwe yi-International Ultraviolet Radiation Association ngo-2021)
Kusukela ekuqaleni kwekhulu lama-20, kuye kwasetshenziswa izinhlobo ezihlukahlukene zemisebe ye-UV ukuze kubulawe amagciwane emanzini, emoyeni nasezindaweni ezingaphezulu. Kusukela ngawo-1940, yayisetshenziselwa ukunciphisa ukusabalala kwesifo sofuba ezibhedlela nasemakilasini ngokukhanyisa uphahla ukuze kubulawe amagciwane emoyeni ojikeleza ekamelweni. Namuhla ayisetshenziswa ezibhedlela kuphela, kodwa nakwezinye izindlu zangasese zomphakathi nasezindizeni lapho kungekho muntu.
Ephepheni elimhlophe elisanda kushicilelwa yi-International Ultraviolet Society, I-Far-UV Radiation: Isimo Samanje Solwazi (kanye nocwaningo olusha), uLinden kanye nababhali ababambisene nabo baphikisa ngokuthi le wavelength ephephile ekude ye-UV ingasetshenziswa kanye nokuphuma komoya okuthuthukisiwe, ukugqoka. imaski kanye nokugoma kuyizinyathelo ezibalulekile zokunciphisa imiphumela yezifo eziwubhadane zamanje nezesikhathi esizayo.
I-Linden imagine systems ingavulwa futhi ivalwe ezindaweni ezivaliwe ukuze kuhlanzeke umoya nezindawo njalo, noma kudaleke imigoqo engabonakali engapheli phakathi kobuhlakani nabafundi, izivakashi nabasebenzi bokunakekela, kanye nabantu abasezikhaleni lapho ukuqhelelana komphakathi kungenakugcinwa khona.
Ukubulala amagciwane nge-UV kungancintisana nemiphumela emihle yokungenisa komoya okuthuthukisiwe kwasendlini, njengoba kunganikeza isivikelo esifanayo njengokwandisa inani lokushintsha komoya ngehora ekamelweni. Ukufaka amalambu e-UV nakho kubiza kancane kunokuthuthukisa lonke uhlelo lwakho lwe-HVAC.
“Kunethuba lapha lokonga imali namandla kube kuvikelwe impilo yomphakathi. Kuyathakazelisa ngempela,” kusho uLinden.
Abanye ababhali kulolu shicilelo bahlanganisa: Ben Ma, University of Colorado, Boulder; uPatricia Gandy noCharles Gerba, eNyuvesi yase-Arizona; kanye noMark Sobsey, University of North Carolina, Chapel Hill).
I-Faculty kanye Nezisebenzi Inqolobane Ye-imeyili Ye-imeyili Yomfundi Ingobo Yomlando Ye-imeyili Yomfundi Omdala I-imeyili Ingobo Yomlando Yomshisekeli Omusha We-imeyili Inqolobane Ye-imeyili Yesikole Samabanga Aphakeme Inqolobane Ye-imeyili Yomphakathi Inqolobane Ye-imeyili Ye-COVID-19 Inqolobane yesifinyezo ye-COVID-19
I-University of Colorado Boulder © University of Colorado Regents Ubumfihlo • Ezomthetho Nezimpawu Zokuhweba • Imephu Yekhampasi
Isikhathi sokuthumela: Nov-03-2023